Steam extraction repairing equipment for repairing polluted soil

Abstract

The invention relates to the technical field of soil remediation, in particular to steam extraction remediation equipment for remediating contaminated soil, which comprises an operation table, a support plate, a shell, a hinge column, a blow injection assembly, an air exhaust assembly and a driving assembly, the support plate is vertically and slidably mounted at one end of the operation table, and the top of the shell is fixedly connected with the bottom of the support plate; the shell is of a hollow cylinder structure, the hinge column is arranged on the periphery of the shell in a sleeving mode and rotationally connected with the shell, the blowing injection assembly comprises a sliding rod and a pair of insertion rods, and the sliding rod is slidably connected with the inner wall of the shell. A pit is formed in the soil, then the shell is lifted and pressed downwards again, the insertion rods are opened towards the two sides and inserted into the soil, the steam flowing area is enlarged, finally, the soil is backfilled, steam blowing injection is conducted, the steam stably flows back to the pit in the steam flowing path, and secondary pollution caused by escape of a large amount of waste gas is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of soil remediation, and in particular to a steam extraction remediation device for remediating contaminated soil. Background Art

[0002] Soil vapor extraction remediation is an in-situ remediation technology for soil contaminated by volatile organic pollutants (such as benzene, petroleum hydrocarbons, and halogenated hydrocarbons). The process involves burying an extraction well beneath the contaminated area. The negative pressure generated by a vacuum pump extracts the volatile pollutant vapors from the soil pores along with the air. These vapors are then purified by a surface treatment system (such as activated carbon adsorption or incineration) before reaching discharge standards. This process also accelerates the volatilization and biodegradation of the pollutants.

[0003] This technology has the advantages of low energy consumption and simple equipment, but it is less effective for treating low-permeability soils and low-volatility pollutants. Another existing technology is steam-enhanced remediation, which simultaneously injects steam into the soil through multiple injection wells. This creates a "steam front" in the contaminated area, pushing pollutants toward the extraction wells. The steam's heat and fluid pressure increase the mobility of pollutants, further enhancing soil remediation effectiveness.

[0004] For example, Chinese patent publication number CN118385258B discloses a steam-heat-enhanced gas-phase extraction remediation device for treating contaminated soil, which includes a device base, a gas-phase extraction assembly, and a gas purification assembly. The gas-phase extraction assembly includes a steam generator and a guide frame mounted on the device base, an outer sleeve clamped into the guide frame, an extraction pipe mounted into the outer sleeve, a push cylinder mounted at the top of the guide frame, and a centrifugal pump connected to the interior of the extraction pipe. The gas purification assembly includes a cyclone separator mounted on the device base, a purification cartridge connected to the cyclone separator, a purification filter element clamped into the interior of the purification cartridge, and a mesh frame.

[0005] Although this solution uses hot steam to heat volatile pollutants in the soil, thereby improving the extraction efficiency of volatile pollutants in contaminated soil, it is not easy to improve the fluidity of the steam or control the diffusion direction of the steam, resulting in high requirements for soil conditions and limited remediation effects. When faced with relatively dry and soft soil, the steam diffuses over a large area in the soil, which can easily lead to a large amount of escape during the extraction process, causing secondary pollution. When faced with relatively moist and compact soil, the steam has difficulty diffusing in the soil, which can easily limit the scope of remediation and reduce the quality of remediation. Summary of the Invention

[0006] The purpose of the present invention is to provide a steam extraction remediation device for remediating contaminated soil, which can stabilize the diffusion range of steam in the soil and guide the steam flow to prevent secondary pollution.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] Provided is a steam extraction remediation device for remediating contaminated soil, comprising an operating table, a support plate, a shell, a twisted column, an injection assembly, an exhaust assembly and a drive assembly. The support plate can be vertically slidably installed on one end of the operating table, the top of the shell is fixedly connected to the bottom of the support plate, the shell is a hollow cylindrical structure, the twisted column is sleeved on the outer periphery of the shell and is rotatably connected thereto, the injection assembly comprises a slide rod and a pair of insertion rods, the slide rod is slidably connected to the inner wall of the shell, the top of the insertion rod is hinged to the bottom of the slide rod, the bottom of the insertion rod passes through the bottom wall of the shell and is slidably connected thereto, one side of the insertion rod is in conflict with the inner wall of the twisted column, the drive assembly is installed on the support plate, the drive assembly is used to drive the twisted column to rotate and drive the slide rod to slide vertically, the exhaust assembly is installed on the operating table, and the exhaust assembly is used to absorb and collect waste gas.

[0009] Preferably, the drive assembly includes a first motor, a rotating shaft and a pair of bevel gears, the top of the first motor is fixedly connected to the bottom of the support plate, the rotating shaft is coaxially connected to the output shaft of the first motor, the rotating shaft passes through the side wall of the shell and is rotatably connected thereto, one of the bevel gears is coaxially connected to the periphery of the rotating shaft, and the other bevel gear is coaxially connected to the top of the strand, and the two bevel gears are meshed with each other.

[0010] Preferably, the drive assembly also includes a screw and a one-way transmission mechanism. The bottom of the screw is rotatably connected to the bottom wall of the shell. The screw passes through the sliding rod and is threadedly connected to it. Both sides of the sliding rod are square concave structures, and the inner walls on both sides of the shell are square protruding structures. The protrusions on the inner walls of the shell are snap-fitted with the recesses on the periphery of the sliding rod. The one-way transmission mechanism is installed on the rotating shaft, and the one-way transmission mechanism is used to drive the screw to rotate in one direction.

[0011] Preferably, the one-way transmission mechanism includes a ratchet, a gear ring, multiple tooth blocks and multiple springs. The ratchet is coaxially connected to the rotating shaft, the gear ring is coaxially connected to the top of the screw, and the multiple tooth blocks are circumferentially distributed around the periphery of the ratchet. The tooth block is rotatably mounted on the ratchet, and the bottom of the tooth block is engaged with the teeth on the gear ring. The spring is mounted on the tooth block, and the spring is used to provide thrust for the rotation and reset of the tooth block.

[0012] Preferably, a plurality of grooves are provided on the periphery of the ratchet, and the grooves are T-shaped structures. One side of the bottom of the tooth block rotates with the inner wall of the groove, and the bottom of the other side of the tooth block contacts the inner wall of the groove. One end of the spring is fixedly connected to the center of the bottom of the tooth block, and the other end of the spring is fixedly connected to the inner wall of the groove.

[0013] Preferably, the blowing assembly also includes a steam generator, a hose, multiple torsion springs, a pair of plugs and multiple arc covers. The bottom of the steam generator is fixedly connected to the top of the operating table, the air outlet of the steam generator is communicated with one end of the hose, the other end of the hose passes through the support plate and the shell and is communicated with the top of the slide rod, the bottom of the slide rod is communicated with the top of the insertion rod, the top of the insertion rod is rotatably connected to the bottom of the slide plate, multiple torsion springs are respectively arranged on both sides of the top of the insertion rod, one end of the torsion spring is fixedly connected to the insertion rod, the other end of the torsion spring is fixedly connected to the slide rod, the bottom of the insertion rod is fixedly connected to the top of the plug, the two plugs are combined into a conical structure, the top edge of the plug conflicts with the bottom of the twisted column, multiple spray holes are opened on the opposite sides of the two insertion rods, the arc cover is located at the bottom of the spray hole and is fixedly connected to the insertion rod, and one end of the opening of the arc cover is close to the slide rod.

[0014] Preferably, the exhaust assembly includes an annular seat, an air collecting hood and a scraper. One side of the annular seat is fixedly connected to the bottom of the operating table. The air collecting hood is a semicircular shell structure. One end of the air collecting hood is rotatably connected to the outer periphery of the annular seat. The scraper is fixedly connected to the inner wall of the air collecting hood.

[0015] Preferably, the exhaust assembly also includes a second motor and a pair of spur gears. The bottom of the second motor is fixedly connected to the top of the air collecting hood. The output shaft of the second motor passes through the top wall of the air collecting hood and is coaxially connected to one of the spur gears. The other spur gear is fixedly connected to the outer periphery of the bottom of the annular seat, and the two spur gears are engaged with each other.

[0016] Preferably, the exhaust assembly also includes a fan, an air duct and a filter plate. The bottom of the fan is fixedly connected to the top of the air collecting hood. The air inlet of the fan is connected to one end of the air duct. The other end of the air duct passes through the top wall of the air collecting hood and is connected to its interior. The filter plate is fixedly connected to the inner wall of the air duct.

[0017] Preferably, it also includes a hydraulic rod, a slide rail and a slider. The top of the hydraulic rod passes through the top of the operating table and is fixedly connected thereto. The telescopic end of the hydraulic rod is fixedly connected to the top of the support plate. One end of the support plate is fixedly connected to the slider. The slider is slidably connected to the outer periphery of the slide rail, and the slide rail is fixedly connected to one end of the operating table.

[0018] Beneficial effects of the present invention:

[0019] 1. When steam leaching soil for remediation, the present invention first moves the twisted column downward with the shell while rotating it to create a hole in the soil. The shell is then raised and pressed down again. During this process, the rods are opened to both sides and inserted into the soil, thereby expanding the steam flow area. Finally, the soil is backfilled and steam is injected. Because the soil in the hole is loose, the airflow gradually flows back into the hole and surges upward, finally leaving the soil and being absorbed by the exhaust assembly. This ensures that the steam flow path is stable and returns to the hole, and is not affected by the moisture and density of the soil, preventing the escape of large amounts of exhaust gas and causing secondary pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention Figure 1 .

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention Figure 2 .

[0023] Figure 3 This is a side view of the structure of the present invention Figure 1 .

[0024] Figure 4 This is a side view of the structure of the present invention Figure 2 .

[0025] Figure 5 The blow molding assembly structure of the present invention is split Figure 1 .

[0026] Figure 6 This is a structural breakdown diagram of the air extraction component of the present invention.

[0027] Figure 7 This is a cross-sectional view of the shell structure of the present invention Figure 1 .

[0028] Figure 8 This is a cross-sectional view of the shell structure of the present invention Figure 2 .

[0029] Figure 9 This is a disassembled diagram of the drive assembly structure of the present invention.

[0030] Figure 10 It is a cross-sectional view of the ratchet structure of the present invention.

[0031] Figure 11 The blow molding assembly structure of the present invention is split Figure 2 .

[0032] In the picture:

[0033] 1. Operating table; 10. Support plate; 11. Housing; 12. Stranding column; 13. Hydraulic rod; 14. Slide rail; 15. Slider; 16. Soil; 17. Pothole;

[0034] 2. Blowing assembly; 20. Sliding rod; 21. Inserting rod; 210. Spray hole; 22. Steam generator; 23. Hose; 24. Torsion spring; 25. Plug; 26. Curved cover;

[0035] 3. Exhaust assembly; 30. Annular seat; 31. Air collecting cover; 32. Scraper; 33. Second motor; 34. Spur gear; 35. Fan; 36. Air duct; 37. Filter plate;

[0036] 4. Drive assembly; 40. First motor; 41. Rotating shaft; 42. Bevel gear; 43. Screw; 44. One-way transmission mechanism; 440. Ratchet; 4400. Groove; 441. Gear ring; 442. Gear block; 443. Spring. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0038] Among them, the drawings are only used for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0039] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inside", "outside" and the like indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0040] In the description of the present invention, unless otherwise expressly specified or limited, when the term "connection" or the like appears to indicate a connection relationship between components, such term should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be internal communication between two components or an interaction between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood in specific circumstances.

[0041] like Figures 1 to 11 As shown:

[0042] A steam extraction remediation device for remediating contaminated soil 16 includes an operating table 1, a support plate 10, a shell 11, a twisting column 12, an injection assembly 2, an exhaust assembly 3 and a driving assembly 4. The support plate 10 can be vertically slidably installed on one end of the operating table 1, the top of the shell 11 is fixedly connected to the bottom of the support plate 10, the shell 11 is a hollow cylindrical structure, the twisting column 12 is sleeved on the outer periphery of the shell 11 and is rotatably connected thereto, the injection assembly 2 includes a sliding rod 20 and a pair of insertion rods 21, the sliding rod 20 is slidably connected to the inner wall of the shell 11, the top of the insertion rod 21 is hinged to the bottom of the sliding rod 20, the bottom of the insertion rod 21 passes through the bottom wall of the shell 11 and is slidably connected thereto, and one side of the insertion rod 21 conflicts with the inner wall of the twisting column 12, the driving assembly 4 is installed on the support plate 10, the driving assembly 4 is used to drive the twisting column 12 to rotate and drive the sliding rod 20 to slide vertically, the exhaust assembly 3 is installed on the operating table 1, and the exhaust assembly 3 is used to absorb and collect exhaust gas.

[0043] When steam extraction repair is performed on the soil 16, the shell 11 is first inserted into the soil 16, and the column 12 is made to descend along with the shell 11. At the same time, the column 12 is driven to rotate by the driving component 4, so that the column 12 digs a hole 17 under the ground during the insertion into the soil 16. Then the shell 11 and the column 12 are moved upward. During the upward movement of the shell 11, the rod 21 extends downward from the shell 11. As the rod 21 separates from the column 12, the two rods 21 are opened to both sides and against the inner wall of the tunnel. Finally, the shell 11 drives the rod 21 to press down, inserting the rod 21 into the soil on both sides of the tunnel, and backfilling the soil scattered on the top of the tunnel into the tunnel. At this point, steam is injected into the soil 16 through the nozzle holes 210 on the rod 21. The steam first diffuses to the sides and surroundings, expanding the repair area. Subsequently, due to the loose soil 16 in the pit 17, the airflow gradually flows back into the pit 17 and surges upward, finally leaving the soil 16 and being absorbed by the exhaust assembly 3 to complete the repair. This makes the steam flow path more stable and is not affected by the moisture and compactness of the soil 16, preventing the escape of large amounts of exhaust gas and causing secondary pollution.

[0044] like Figures 1 to 10 As shown:

[0045] The driving assembly 4 includes a first motor 40, a rotating shaft 41 and a pair of bevel gears 42. The top of the first motor 40 is fixedly connected to the bottom of the support plate 10, the rotating shaft 41 is coaxially connected to the output shaft of the first motor 40, and the rotating shaft 41 passes through the side wall of the shell 11 and is rotatably connected thereto. One of the bevel gears 42 is coaxially connected to the periphery of the rotating shaft 41, and the other bevel gear 42 is coaxially connected to the top of the strand 12, and the two bevel gears 42 are meshed with each other.

[0046] The drive assembly 4 also includes a screw 43 and a one-way transmission mechanism 44. The bottom of the screw 43 is rotatably connected to the bottom wall of the shell 11. The screw 43 passes through the slide rod 20 and is threadedly connected to it. Both sides of the slide rod 20 are square concave structures, and the inner walls on both sides of the shell 11 are square protruding structures. The protrusions on the inner wall of the shell 11 are snap-fitted with the recessed parts on the periphery of the slide rod 20. The one-way transmission mechanism 44 is installed on the rotating shaft 41. The one-way transmission mechanism 44 is used to drive the screw 43 to rotate in one direction.

[0047] The one-way transmission mechanism 44 includes a ratchet 440, a gear ring 441, multiple tooth blocks 442 and multiple springs 443. The ratchet 440 is coaxially connected to the rotating shaft 41, the gear ring 441 is coaxially connected to the top of the screw 43, and multiple tooth blocks 442 are distributed circumferentially on the periphery of the ratchet 440. The tooth block 442 is rotatably installed on the ratchet 440. The bottom of the tooth block 442 is engaged with the teeth on the gear ring 441. The spring 443 is installed on the tooth block 442. The spring 443 is used to provide thrust for the rotation and reset of the tooth block 442.

[0048] A plurality of grooves 4400 are provided on the periphery of the ratchet 440. The grooves 4400 are T-shaped. One side of the bottom of the tooth block 442 rotates with the inner wall of the groove 4400, and the bottom of the other side of the tooth block 442 contacts the inner wall of the groove 4400. One end of the spring 443 is fixedly connected to the center of the bottom of the tooth block 442, and the other end of the spring 443 is fixedly connected to the inner wall of the groove 4400.

[0049] As the housing 11 descends for the first time, the motor is energized, and its output shaft drives the rotating shaft 41 to rotate clockwise. This, through the meshing transmission of the two bevel gears 42, drives the twisting column 12 to rotate, thereby creating a hole 17 in the soil 16. Although the ratchet 440 rotates with the rotating shaft 41 at this time, the slide bar 20 is located at the top of the housing 11 and contacts each other, causing the tooth block 442 on the ratchet 440 to contact the teeth on the gear ring 441. The tooth block 442 rotates in the groove 4400, compressing the spring 443, and then rotates back to the original position as the spring 443 rebounds.

[0050] When the housing 11 descends for the second time, the output shaft of the motor rotates in the reverse direction. At this time, the ratchet 440 rotates in the reverse direction, and the tooth block 442 in the groove 4400 contacts the inner wall of the T-shaped groove 4400. Figure 10 Point F in the middle shows the area where the tooth block 442 contacts the inner wall of the groove 4400, so that the ratchet 440 and the tooth ring 441 are meshed and transmitted, thereby driving the screw 43 to rotate. Since the two sides of the slide rod 20 are mutually engaged with the inner wall of the shell 11, the slide rod 20 cannot rotate. Through the threaded transmission between the slide rod 20 and the screw 43, the slide rod 20 is driven to slide downward out of the shell 11, thereby pushing the insertion rod 21 out of the shell 11 and separating from the hinge column 12 to open to both sides.

[0051] like Figures 1 to 11 As shown:

[0052] The blowing assembly 2 also includes a steam generator 22, a hose 23, a plurality of torsion springs 24, a pair of plugs 25 and a plurality of arc covers 26. The bottom of the steam generator 22 is fixedly connected to the top of the operating table 1, and the air outlet of the steam generator 22 is communicated with one end of the hose 23. The other end of the hose 23 passes through the support plate 10 and the shell 11 and is communicated with the top of the slide rod 20. The bottom of the slide rod 20 is communicated with the top of the plug rod 21, and the top of the plug rod 21 is rotatably connected to the bottom of the slide plate. A plurality of torsion springs 24 are respectively sleeved on both sides of the top of the plug rod 21, one end of the torsion spring 24 is fixedly connected to the plug rod 21, and the other end of the torsion spring 24 is fixedly connected to the slide rod 20. The bottom of the plug rod 21 is fixedly connected to the top of the plug 25. The two plugs 25 are combined into a conical structure. The top edge of the plug 25 conflicts with the bottom of the twisted column 12. A plurality of spray holes 210 are provided on the opposite side of the two plug rods 21. The arc cover 26 is located at the bottom of the spray hole and is fixedly connected to the plug rod 21. One end of the opening of the arc cover 26 is close to the slide rod 20.

[0053] When the slide bar 20 slides down to the bottom of the housing 11, the insertion rod 21 extends out of the strut 12. At this point, the torsion spring 24 rebounds from its torsion state, driving the insertion rod 21 to rotate, causing the two insertion rods 21 to open to the sides and press against the inner wall of the pit 17. The housing 11 then moves downward, and the insertion rods 21, under the downward pressure of the housing 11 and the resistance of the soil 16, are inserted into the soil 16 from both sides. The steam generator 22 is then activated, injecting steam into the slide bar 20 through the hose 23 and into the soil 16 through the spray hole 210. The plugs 25 at the bottom of the insertion rod 21 fit together to form a cone, which reduces the resistance of the housing 11 inserted into the soil 16 and prevents the soil 16 from entering the strut 12. The spray hole 210 is provided with an arc-shaped cover 26 with its opening facing the slide bar 20, preventing the spray hole 210 from being blocked when the insertion rod 21 is inserted into the soil 16.

[0054] like Figures 1 to 6 As shown:

[0055] The exhaust assembly 3 includes an annular seat 30, an air collecting hood 31 and a scraper 32. One side of the annular seat 30 is fixedly connected to the bottom of the operating table 1. The air collecting hood 31 is a semicircular shell structure. One end of the air collecting hood 31 is rotatably connected to the outer periphery of the annular seat 30, and the scraper 32 is fixedly connected to the inner wall of the air collecting hood 31.

[0056] The exhaust assembly 3 also includes a second motor 33 and a pair of spur gears 34. The bottom of the second motor 33 is fixedly connected to the top of the air collecting hood 31. The output shaft of the second motor 33 passes through the top wall of the air collecting hood 31 and is coaxially connected to one of the spur gears 34. The other spur gear 34 is fixedly connected to the outer periphery of the bottom of the annular seat 30, and the two spur gears 34 are meshed with each other.

[0057] The exhaust assembly 3 also includes a fan 35, an air duct 36 and a filter plate 37. The bottom of the fan 35 is fixedly connected to the top of the air collecting hood 31, the air inlet of the fan 35 is connected to one end of the air duct 36, the other end of the air duct 36 passes through the top wall of the air collecting hood 31 and is connected to its interior, and the filter plate 37 is fixedly connected to the inner wall of the air duct 36.

[0058] After the insertion rod 21 is inserted into the soil 16, the second motor 33 is energized, and its output shaft drives the spur gear 34 to rotate. The meshing rotation between the two spur gears 34 causes the motor to perform a circular motion around the annular seat 30, simultaneously driving the gas collecting hood 31 to rotate around the annular seat 30. The annular seat 30 is configured as a ring structure to facilitate the up and down movement of the housing 11. During the rotation process, the scraper 32 inside the gas collecting hood 31 scrapes the soil 16 back into the tunnel for backfilling, preventing it from escaping directly from the tunnel after the steam is injected. At the same time, the gas collecting hood 31 is rotated so that its open side faces the upwind outlet, which can further collect the exhaust gas and prevent it from escaping.

[0059] The fan 35 is operated to draw air out of the air hood 31 through the air duct 36, creating a negative pressure that absorbs the exhaust gas escaping from the bottom of the soil 16. Because the air duct 36 is located at the top of the air hood 31, the high-speed exhaust gas bends upward when entering the air duct 36, causing the soil 16 particles contained in the exhaust gas to be thrown out of the air hood 31 due to inertia. The remaining soil 16 particles are also filtered out by the filter plate 37, thereby removing impurities from the recovered exhaust gas.

[0060] like Figures 1 to 5 As shown:

[0061] It also includes a hydraulic rod 13, a slide rail 14 and a slider 15. The top of the hydraulic rod 13 passes through the top of the operating table 1 and is fixedly connected thereto. The telescopic end of the hydraulic rod 13 is fixedly connected to the top of the support plate 10. One end of the support plate 10 is fixedly connected to the slider 15. The slider 15 is slidably connected to the periphery of the slide rail 14. The slide rail 14 is fixedly connected to one end of the operating table 1.

[0062] The hydraulic rod 13 is put into operation, and its telescopic end pushes the support plate 10 to move up and down, which can drive the shell 11 to move vertically. At the same time, one end of the support plate 10 drives the slider 15 to slide up and down along the slide rail 14. The slider 15 and the slide rail 14 keep the support plate 10 moving stably to prevent deviation from causing the shell 11 to collide with the annular seat 30.

[0063] It should be noted that the above-described specific embodiments are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that various modifications, equivalent substitutions, and variations may be made to the present invention. However, as long as these modifications do not depart from the spirit of the present invention, they are intended to be within the scope of protection of the present invention. Furthermore, certain terms used in the specification and claims of this application are not intended to be limiting; they are intended solely to facilitate a clear description of the positional relationships and functions of various components.

Claims

1. A steam extraction remediation device for remediating contaminated soil (16), characterized in that: The invention comprises an operating table (1), a support plate (10), a shell (11), a twisted column (12), a blowing assembly (2), an exhaust assembly (3) and a driving assembly (4), wherein the support plate (10) can be vertically slidably mounted on one end of the operating table (1), the top of the shell (11) is fixedly connected to the bottom of the support plate (10), the shell (11) is a hollow cylindrical structure, the twisted column (12) is sleeved on the outer periphery of the shell (11) and is rotatably connected thereto, the blowing assembly (2) comprises a slide rod (20) and a pair of insert rods (21), the slide rod ( 20) is slidably connected to the inner wall of the shell (11), the top of the insertion rod (21) is hinged to the bottom of the slide rod (20), the bottom of the insertion rod (21) passes through the bottom wall of the shell (11) and is slidably connected thereto, one side of the insertion rod (21) is in contact with the inner wall of the twist column (12), the driving component (4) is installed on the support plate (10), the driving component (4) is used to drive the twist column (12) to rotate and drive the slide rod (20) to slide vertically, the exhaust component (3) is installed on the operating table (1), and the exhaust component (3) is used to absorb and collect exhaust gas.

2. The steam extraction remediation equipment for remediating contaminated soil (16) according to claim 1, characterized in that: The driving assembly (4) includes a first motor (40), a rotating shaft (41) and a pair of bevel gears (42). The top of the first motor (40) is fixedly connected to the bottom of the support plate (10). The rotating shaft (41) is coaxially connected to the output shaft of the first motor (40). The rotating shaft (41) passes through the side wall of the housing (11) and is rotatably connected thereto. One of the bevel gears (42) is coaxially connected to the periphery of the rotating shaft (41), and the other bevel gear (42) is coaxially connected to the top of the twisting column (12). The two bevel gears (42) are meshed with each other.

3. The steam extraction remediation equipment for remediating contaminated soil (16) according to claim 2, characterized in that: The driving assembly (4) further includes a screw (43) and a one-way transmission mechanism (44). The bottom of the screw (43) is rotatably connected to the bottom wall of the housing (11). The screw (43) passes through the slide rod (20) and is threadedly connected thereto. Both sides of the slide rod (20) are square concave structures. Both sides of the inner walls of the housing (11) are square protruding structures. The protruding portions of the inner walls of the housing (11) are snap-fitted with the concave portions of the outer periphery of the slide rod (20). The one-way transmission mechanism (44) is mounted on the rotating shaft (41). The one-way transmission mechanism (44) is used to drive the screw (43) to rotate in one direction.

4. The steam extraction remediation equipment for remediating contaminated soil (16) according to claim 3, characterized in that: The one-way transmission mechanism (44) includes a ratchet (440), a toothed ring (441), a plurality of toothed blocks (442) and a plurality of springs (443). The ratchet (440) is coaxially connected to the rotating shaft (41), the toothed ring (441) is coaxially connected to the top of the screw (43), and the plurality of toothed blocks (442) are circumferentially distributed around the periphery of the ratchet (440). The toothed block (442) is rotatably mounted on the ratchet (440), and the bottom of the toothed block (442) is meshed with the teeth on the toothed ring (441). The spring (443) is mounted on the toothed block (442), and the spring (443) is used to provide thrust for the toothed block (442) to rotate and reset.

5. The steam extraction remediation equipment for remediating contaminated soil (16) according to claim 4, characterized in that: A plurality of grooves (4400) are provided on the periphery of the ratchet (440), and the grooves (4400) are T-shaped structures. One side of the bottom of the tooth block (442) rotates with the inner wall of the groove (4400), and the bottom of the other side of the tooth block (442) contacts the inner wall of the groove (4400). One end of the spring (443) is fixedly connected to the center of the bottom of the tooth block (442), and the other end of the spring (443) is fixedly connected to the inner wall of the groove (4400).

6. The steam extraction remediation equipment for remediating contaminated soil (16) according to claim 1, characterized in that: The blowing assembly (2) further includes a steam generator (22), a hose (23), a plurality of torsion springs (24), a pair of plugs (25) and a plurality of arc-shaped covers (26), wherein the bottom of the steam generator (22) is fixedly connected to the top of the operating table (1), the air outlet of the steam generator (22) is connected to one end of the hose (23), the other end of the hose (23) passes through the support plate (10) and the shell (11) and is connected to the top of the slide rod (20), the bottom of the slide rod (20) is connected to the top of the plug rod (21), the top of the plug rod (21) is rotatably connected to the bottom of the slide, and the plurality of torsion springs (24) are respectively sleeved. Located on both sides of the top of the plug rod (21), one end of the torsion spring (24) is fixedly connected to the plug rod (21), and the other end of the torsion spring (24) is fixedly connected to the slide rod (20). The bottom of the plug rod (21) is fixedly connected to the top of the plug (25). The two plugs (25) are combined into a conical structure. The top edge of the plug (25) contacts the bottom of the twist column (12). A plurality of spray holes (210) are provided on opposite sides of the two plug rods (21). The arc cover (26) is located at the bottom of the spray hole and is fixedly connected to the plug rod (21). One end of the arc cover (26) is close to the slide rod (20).

7. The steam extraction remediation equipment for remediating contaminated soil (16) according to claim 1, characterized in that: The air extraction assembly (3) comprises an annular seat (30), an air collecting hood (31) and a scraper (32). One side of the annular seat (30) is fixedly connected to the bottom of the operating table (1). The air collecting hood (31) is a semicircular shell structure. One end of the air collecting hood (31) is rotatably connected to the outer periphery of the annular seat (30). The scraper (32) is fixedly connected to the inner wall of the air collecting hood (31).

8. The steam extraction remediation equipment for remediating contaminated soil (16) according to claim 7, characterized in that: The air extraction assembly (3) further includes a second motor (33) and a pair of spur gears (34). The bottom of the second motor (33) is fixedly connected to the top of the air collecting cover (31). The output shaft of the second motor (33) passes through the top wall of the air collecting cover (31) and is coaxially connected to one of the spur gears (34). The other spur gear (34) is fixedly connected to the periphery of the bottom of the annular seat (30). The two spur gears (34) are meshed with each other.

9. A steam extraction remediation device for remediating contaminated soil (16) according to claim 8, characterized in that: The exhaust assembly (3) further includes a fan (35), an air duct (36) and a filter plate (37). The bottom of the fan (35) is fixedly connected to the top of the air collecting hood (31). The air inlet of the fan (35) is connected to one end of the air duct (36). The other end of the air duct (36) passes through the top wall of the air collecting hood (31) and is connected to the interior thereof. The filter plate (37) is fixedly connected to the inner wall of the air duct (36).

10. The steam extraction remediation equipment for remediating contaminated soil (16) according to claim 1, characterized in that: It also includes a hydraulic rod (13), a slide rail (14) and a slider (15), wherein the top of the hydraulic rod (13) passes through the top of the operating table (1) and is fixedly connected thereto, the telescopic end of the hydraulic rod (13) is fixedly connected to the top of the support plate (10), one end of the support plate (10) is fixedly connected to the slider (15), the slider (15) is slidably connected to the periphery of the slide rail (14), and the slide rail (14) is fixedly connected to one end of the operating table (1).

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